alt Hacker News> No amount of knowledge or discussion will make a person accept something they don’t want to accept.
Not sure it's ever good to assume this beforehand though. Most things are negotiable, if you know how to negotiate right.
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More than that, sometimes one side doesn’t want to accept something because everything they know about it says it’s wrong. Then they’re faced with evidence and reason prevails.
I usually have very strong opinions but try to hold on to them very loosely. It happened that I was convinced with evidence that I am right and refused to accept any alternative until new evidence slapped me in the face. At that point knowledge and discussion made me accept something I had previously thought preposterous, sometimes to the point of outright dismissing any conversation, this is how preposterous the proposition sounded at first sight.
What I want to say is that if you don’t know your audience, if you don’t know for sure your attempts are fruitless, it’s always worth a shot to use your knowledge in a discussion and let the other party digest that and see if it that moves the needle.
You don’t have to assume it, but you should be more than prepared for it to be the case